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Definition of heptahedron noun from the Oxford Advanced Learner's Dictionary

heptahedron

noun
 
/ˌheptəˈhiːdrən/
 
/ˌheptəˈhiːdrən/
(geometry)
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  1. a solid figure with seven flat sides
    Word Originlate 17th cent.: from hepta- ‘seven’ + -hedron, on the pattern of words such as polyhedron.
See heptahedron in the Oxford Advanced American Dictionary
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Nearby words

trait
noun
 
 
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